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Digital Archive International History Declassified

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  • October 02, 1944

    Letter from Boris Merkulov (USSR People’s Commissar for State Security) to Lavrenty Beria (USSR People’s Commissar for Internal Affairs)

    Letter from Merkulov to Beria regarding the KGB’s efforts to obtain information about the creation of the atomic bomb and specifically about the related problems with uranium

  • November 28, 1945

    Beria’s Cover Memo to Stalin on Niels Bohr

    Memo to Stalin discussing Beria’s efforts to obtain information from physicist Niels Bohr about development of the atomic bomb.

  • November 28, 1945

    The Interrogation of Niels Bohr

    At the end of October 1945 two NDVD employees of the “S” Department for atomic intelligence activities were sent to Denmark to establish contact and speak with Niels Bohr. They managed to meet Bohr at his institute twice, on 14 and 16 November 1945, and obtained answers to 22 questions on constructing a nuclear reactor and the atomic bomb.

  • December, 1945

    Kurchatov’s Evaluation of Niels Bohr's Questioning

    Evaluation by the scientific director of the Soviet nuclear project, Igor Kurchatov, of the interview with Niels Bohr.

  • July 04, 1946

    Report from DS Chief in Sliven Region on Disclosed Military Conspiracy

    A report on the investigation of a political conspiracy, said to be organized by Metodiy Chavdarov, a colonel at the Sliven garrison. The arrested colonel and his accomplices allegedly conspired to overthrow the Fatherland Front government, once the Soviet troops leave the country.

  • January 26, 1948

    Letter from Assen Georgiev to Bulgarian Foreign Minister V. Kolarov on Bulgarian Intelligence Activity in France

    The head of the Bulgarian legation in Paris Asen Georgiev shares his observations for the inefficiencies in the Bulgarian intelligence apparatus. He recommends a number of measures that will potentially improve the intelligence operations abroad. As a first step he suggests sweeping personnel changes.

  • June 22, 1954

    Letter from Nikita S. Khrushchev, First Secretary of the Central Committee of the Communist Party of the Soviet Union, to Josip Broz Tito and the Central Committee of the League of Communists Of Yugoslavia

    Letter from Soviet leader Nikita S. Khrushchev to Yugoslav leader Josep B. Tito suggesting that the time is ripe for a rapprochement between the two states and parties. Blaming former NKVD chief Lavrenty Beria and former Yugoslav leadership member Milovan Djilas for doing the work of the imperialists by attempting to drive a wedge between the Soviet and Yugoslav people and parties, Khrushchev suggests that the ousting of both will increase rapprochement between the two countries and be the catalyst for a a summit between the two leaders.

  • July 01, 1954

    Report on Bulgarian Army Counterintelligence Operations in the Period 1944-1954

    The report elaborates on the achievements of the army counter-intelligence services over a ten-year period—the eradication of reactionary officers conspiracy groups, the training of new recruits, etc.

  • October 13, 1955

    CC BCP Politburo Resolution "B" Protocol for Cooperation between the Ministry of Internal Affairs and Stasi

    The CC BCP Politburo approves the protocol for cooperation between the Ministry of Internal Affairs and the East German Ministry for State Security (Stasi), agreed upon at a September meeting in Berlin.

  • September 19, 1956

    Czechoslovak Politburo Resolution on Plan to 'Counter the Czechoslovak Reactionary Exiles'

    This Czechoslovak Politburo Resolution of 1956 approved an Interior Ministry plan to counter “reactionary exiles.” Radio Free Europe was an important target, and a series of disinformation actions were planned to disrupt its operations.

  • October 24, 1956

    International Operations Division, Guidance to Radio Liberation from New York on Satellite Situation

    The International Operations Division officer responsible for Radio Liberty notes to Cord Meyer his disagreement with RL’s policy of avoiding all commentary on the Hungarian Revolution. He cites Meyer’s intention to discuss the issue with AMCOMLIB president Sargeant.

  • March 12, 1958

    Report from Gen. M. Spasov on Multilateral Security Meeting in Bucharest

    A report by the Deputy Minister of Internal Affairs, Mircho Spasov, on the Ministerial Meeting in Bucharest of delegations from Romania, Bulgaria, Czechoslovakia, Hungary, and the Soviet Union. The meeting called for focusing on preventing subversive acts of Western intelligence, improving exchange of information, and conducting joint operations.

  • September 01, 1958

    Letter from T. Zhivkov to Soviet Presidium on Training of Bulgarian Military Intelligence Officers at Intelligence Courses in the USSR

    Todor Zhivkov requests from Moscow training of Bulgarian intelligence officers.

  • September 15, 1958

    Report to Central Committee on Press Conference about 'Provocative and Subversive Activities of American Radio Stations'

    Description of a 1958 press conference in Moscow organized by the State Committee on Cultural Relations, with KGB assistance, to discredit Western broadcasts to the USSR and Eastern Europe. The press conference drew on the presence of alleged former employees of the radio stations.

  • October 02, 1958

    T. Zhivkov’s Report at the Bulgarian Plenary Session on the Middle East Crisis

    A report based on military intelligence information and on Zhivkov's conversation with the Soviet leader Nikita Khrushchev.

  • June 07, 1960

    Note from KGB Chairman A. Shelepin to Central Committee of the Communist Party of the Soviet Union, Regarding Plan to Discredit CIA Chief Dulles

    Shelepin sets out a plan to discredit CIA chief Allen Dulles.

  • March 06, 1961

    Protocol on the joint negotiations of the Czechoslovak Interior Ministry delegation and the delegation of KGB border troops

    The Czechoslovak and Soviet delegations discussed the fulfillment of the 1958 joint proceedings on Soviet border troops, further coordination of the border organs of both parties, the relay of technical equipment at the border and joint actions for border searches. Also on the agenda was the easing of border passage in times of emergency for citizens of both states.

  • September 05, 1961

    Ministry of the Interior Bulletin on Anti-Bulgarian Activity of Greece and Turkey

    The Ministry of Internal Affairs reports its intelligence findings on the military cooperation between the US, Greece and Turkey.

  • May 22, 1964

    State Department Executive Secretary Benjamin H. Read to National Security Adviser McGeorge Bundy, 'NSAM 241 on Report on French Gaseous Diffusion Plant'

    Noting that the situation that gave rise to NSAM 41 had improved, Read informed Bundy that intelligence reporting would continue but he wanted permission to stop work responsive to the NSAM. There had been “no indication of any attempts by the French to enlist German or Italian cooperation in the Pierrrelatte project.”

  • March 23, 1967

    Bulgarian State Security Chairman Angel Solakov’s Report at a Bulgarian Communist Party Plenum

    According to the State Security Committee chair, Angel Solakov, there has been a major shift in the policies of the West towards the Soviet bloc. While during the 1950s military face-off was often considered an option, in the late 1960s such possibility has been largely ruled out. Consequently the US and their allies in Western Europe are focusing their efforts on fighting socialism around the world through peaceful means, such as strengthening economic and cultural ties with the Soviet bloc countries. This calls for a change in the strategy of the State Security Committee intelligence operations. Solakov also reports on the anti-Soviet activities of the Chinese and Albanian intelligence services across Europe.